8187 Akiramisawa
| Discovery [1] | |
|---|---|
| Discovered by | S. Otomo |
| Discovery site | Kiyosato Obs. |
| Discovery date | 15 December 1992 |
| Designations | |
| 8187 Akiramisawa | |
Named after | Akira Misawa (Japanese botanist)[2] |
| 1992 XL · 1971 UF4 1971 VV | |
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 44.63 yr (16,302 days) |
| Aphelion | 3.3511 AU |
| Perihelion | 2.6218 AU |
| 2.9864 AU | |
| Eccentricity | 0.1221 |
| 5.16 yr (1,885 days) | |
| 313.66° | |
| 0° 11m 27.6s / day | |
| Inclination | 11.609° |
| 83.070° | |
| 277.65° | |
| Physical characteristics | |
| Dimensions | 11.86 km (calculated)[3] |
| 5.8153±0.0015 h[4] | |
| 0.057 (assumed)[3] | |
| C [3] | |
| 12.8[1] · 13.45±0.27[5] · 12.908±0.007 (R)[4] · 13.36[3] | |
8187 Akiramisawa, provisional designation 1992 XL, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered by Japanese astronomer Satoru Otomo at Kiyosato Observatory (894) on 15 December 1992.[6]
The C-type asteroid orbits the Sun at a distance of 2.6–3.4 AU once every 5 years and 2 months (1,885 days). Its orbit has an eccentricity of 0.12 and an inclination of 12° with respect to the ecliptic.[1] The first precovery was taken at Cerro El Roble Station in 1971, extending the asteroid's observation arc by 21 years prior to its discovery.[6]
A rotational light-curve of this asteroid was obtained from photometric observations made at the U.S. Palomar Transient Factory in June 2010. The light-curve gave a rotation period of 5.8153±0.0015 hours with a brightness amplitude of 0.90 in magnitude (U=2).[4] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057, and calculates a diameter of 11.9 kilometers, based on an absolute magnitude of 13.36.[1]
The minor planet was named in honour of Japanese botanist Akira Misawa (1942–1994), a professor at Chiba University , who examined the effects of light pollution on plants.[2] Naming citation was published on 9 January 2001 (M.P.C. 41935).[7]
References
- ^ a b c d e "JPL Small-Body Database Browser: 8187 Akiramisawa (1992 XL)" (2016-06-09 last obs.). Jet Propulsion Laboratory. Retrieved 4 December 2016.
- ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (8187) Akiramisawa. Springer Berlin Heidelberg. p. 637. ISBN 978-3-540-00238-3. Retrieved 4 May 2016.
- ^ a b c d e "LCDB Data for (8187) Akiramisawa". Asteroid Lightcurve Database (LCDB). Retrieved 4 May 2016.
- ^ a b c Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 4 May 2016.
- ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 4 May 2016.
- ^ a b "8187 Akiramisawa (1992 XL)". Minor Planet Center. Retrieved 4 May 2016.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 May 2016.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- 8187 Akiramisawa at the JPL Small-Body Database
